Year current US$ 1967 29999.999329447703 1968 39999.9991059303 1969 29999.999329447703 1970 39999.9991059303 1971 39999.9991059303 1972 9999.99977648258 1973 39999.9991059303 1974 70000.0002980232 1975 90000.0035762787 1976 189999.99761581398 1977 29999.999329447703 1978 259999.990463257 1979 70000.0002980232 1980 79999.9982118607 1981 300000.011920929 1982 209999.993443489 1983 159999.99642372102 1984 300000.011920929 1985 140000.000596046 1986 180000.00715255702 1987 79999.9982118607 1988 180000.00715255702 1989 159999.99642372102 1990 409999.99642372096 1991 119999.997317791 1992 219999.998807907 1993 90000.0035762787 1994 379999.99523162795 1995 250000 1996 280000.001192093 1997 259999.990463257 1998 239999.994635582 1999 200000.00298023198 2000 19999.9995529652 2001 79999.9982118607 2002 59999.9986588955 2003 29999.999329447703 2004 140000.000596046 2005 29999.999329447703 2006 19999.9995529652 2007 39999.9991059303 2008 289999.99165535 2009 9999.99977648258 2010 19999.9995529652 2011 19999.9995529652 2015 0 2016 29999.999329447703 2017 9999.99977648258 2018 0 2019 0 2020 680000.007152557 2021 9999.99977648258 2022 0